Biological effects of ultrasound
Summary :
Table of Contents
- Introduction
- Mechanisms of interaction with biological tissue and resulting bioeffects
- The physical mechanism
- Biologically significant effect of ultrasound
- Diagnostic ultrasound
- The second mechanism
- Conclusion
- References
Abstract
Medical sonography, high intensity focused ultrasound (HIFU), and ultrasound-enhanced systemic thrombolysis are just three of the medical applications of the natural phenomenon of 'ultrasound,' high frequency sound waves that are undetectable to the human ear. ultrasound waves have a number of physical and dynamic properties that make them suitable for both diagnostic and therapeutic applications in medicine. This report will describe these properties underlying ultrasound technology. Then it will go on to describe the mechanisms of interaction between ultrasound waves and the biological tissue that they pass through, and it will discuss some of the bioeffects that result from these interactions.ultrasound technology in medical diagnostics dates back to the late 1940's, while its use in therapeutic settings dates back even earlier to the 1920's. (http://www.ob- ultrasound.net/history1.html) Medical ultrasound technology is made possible by discoveries in navigation by sound (SONAR) and the discovery in 1880 of the piezo-electric effect by Pierre and Jacques Curie.
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